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    Assessing the spatial variability of soil properties to delineate nutrient management zones in smallholder maize-based system of Nigeria

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    Journal Article (2.955Mb)
    Date
    2022
    Author
    Peter-Jerome, H.
    Adewopo, J.
    Kamara, A.
    Aliyu, K.T.
    Dawaki, M.U.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Spatially explicit information on soil variability is relevant for agronomic decisions; however, such information is limited in the northern Guinea savanna (NGS) agroecological zone of Nigeria. This study was conducted to delineate soil nutrient management zones (MZs), based on spatial variability of soils in the smallholder maize-based farming system within the NGS. Two hundred and eighty-nine soil samples were analyzed for some physical and chemical properties. Principal component analysis (PCA) was used to aggregate the soil properties into four principal components, which accounted for about 60% of the variation in the data, and spatial variability was assessed with a semivariogram. The ordinary kriging technique was used to predict soil properties at unsampled locations, while weighted overlay analysis was conducted to delineate nutrient management zones. Results showed that total nitrogen (0.06%), available phosphorus (5.6 mg kg−1), organic carbon (0.66%), and effective cation exchange capacity (5.6 cmol(+) kg−1) are below optimal requirement for maize production. Four MZs were identifiable in the region with the highest fertility (MZ3 and MZ4) associated with the northern area but covering a relatively small part (9.1%). The differences observed in soil properties among the MZs suggest that each zone requires different agronomic management, especially in relation to fertilizer application.
    Acknowledgements
    The authors thank IITA under the auspices of the project “Taking Maize Agronomy to Scale in Africa (TAMASA)” for all the support given, especially with field operations and soil analysis. This research was carried out with funding support from the Bill and Melinda Gates Foundation (Contract no. OPP1113374, Grant no.: PJ-002113).
    https://dx.doi.org/10.1155/2022/5111635
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7491
    IITA Authors ORCID
    Helen Peterhttps://orcid.org/0000-0002-2598-921X
    Julius Adewopohttps://orcid.org/0000-0003-4831-2823
    Alpha Kamarahttps://orcid.org/0000-0002-1844-2574
    kamaluddin tijjanihttps://orcid.org/0000-0003-1613-1147
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1155/2022/5111635
    Research Themes
    Plant Production and Health
    IITA Subjects
    Agronomy; Farming Systems; Food Security; Maize; Plant Breeding; Plant Health; Plant Production; Smallholder Farmers; Soil Fertility
    Agrovoc Terms
    Soil Properties; Nutrient Management; Smallholders; Farmers; Farming Systems; Maize; Nigeria
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Headquarters and Western Africa Hub
    Journals
    Applied and Environmental Soil Science
    Collections
    • Journal and Journal Articles4501
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